Razor-stropping device



E. JUELSON.

RAZOR STROPPING DEVICE.

APPLICATION FILED IIINE I5, 1918.

1,346,2 1 2. I Patented J Illy 13, 1920.

Irufenr fda/fn Jae/Son PATENT OFFICE.

EDWIN JUELSON, OF CHICAGO, ILLINOIS.

RAZOR-STROPPING DEVICE.

Application filed June 15, 1918.

fo all ui/2,0m t may concor/n.'

Be it known that 1, EDWIN JUiiLsoN, a citizen of the United States,residing at Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improveincnts in RaZor-StroppingDevices, of which the following is a specification.

r1`he invention relatesto razor stropping devices especially of the kindin which a blade of a safety razor is successively and alternatelyplaced in engagement with each of a pair of stropping rollers.

It is an object of the invention to provide a razor stropping deviceadapted to be attached to a sound repioducing machine such that therotation of the disk carrier of the inusicalinstrument constitutes thesource of power for imparting rotation to the stropping rollers. v

A. further object of the invention einbraces the provision of astropping device with a friction disk adapted to be held in engagementwith the disk carrier of the instrument whereby upon rotation of saidfriction disk rotation is imparted to the stropping rollers.

It is also an object of the invention to provide improved means fortransmitting rotation from the friction disk to the stropping rollers.

A further object of the invention embraces the provision of improvedmeans for attaching the device to the sound reproducing machine.

To the accomplishment of the objects stated and others that will becomeapparent as the description proceeds the preferred einbodinient of theinvention comprises the means hereinafter described and specificallypointed out in the appended claim.

In the annexed drawing- Figure 1 is a top plan view of the device shownin functional position on a sound reproducing machine, indicateddiagrammatically.

Fig. 2 is an elevational view of the device.

Fig. 3 is a longitudinal section of the device, and

Fig. 4 is a section on line 4 4- of Fig. 1.

Referring to the drawing, 1 indicates the upper part of a soundreproducing machine such as a graphophone, in which a disk carrier 2 isarranged for rotation. The power for imparting rotative movement to saidcarrier 2 can be derived in the usual manner from a spring motor (notshown) or Specification of Letters Patent.

Patented J lily 13,

Serial No. 240.120.

may be obtained in any preferred or suitable manner. To the wall portion1 of the instrument' the razor stropping device iS `detachably securedin such relation that rotation of the carrier 2 is made use of as asource of driving power for the stropping elements of the device. rThelatter coniprises a box-like structure generally designated by 3 andequipped `with longitudinal walls 4 and 5, and the bottom 6, which partsare preferably, although not necessarily, formed integral. The box 3 isopen at tlie top to permit insertion of the various elementsconstituting the operative organs of the stiopping device. The end walls-5 are provided with apertures for the reception of shafts 7` whichcarry the stropping rollers 7 thereon. The rollers have preferably acoating or lining of suitable material to accomplish stropping of therazor blade. To each of the rollers 7 a gear 8 is secured thereto andboth gears mesh so that the rollers 7 are rotated in oppositedirections. The shaft 7 of one roller extends through the end wall 5 andcarries at its protruding end a p inion 9 which is disposed interiorlyof a circular flange 10 of a` friction disk 11 in ounted on a stub shaft20. As shown in Figs. 1 and 4 the i'iange 10 is equipped with a series of apertures 12 into which the teeth of the pinion 9 successivelyproject. The friction disk 11 carries onV flange 10 a band 1 3 ofsuitable material whereby the frictional engagement between the frictiondisk and the disk carrier 2 of the instrument is materially enhanced.

From the foregoing it is obvious thatv upon rotation of the frictiondisk 11 due to the rotation of the disk record carrier 2 with which theformer is in engagement, the rollers 7 are turned in oppositedirections. Intermediate the rollers 7 and subjacent thereto a rockshaft 14 is journaled in the end walls 5 of the box 3. The rock shaft 14carries a blade holder 15 having a plurality of clips 16 between which ablade to be stropped is received. At one end of the shaft a crank arm 17is keyed thereto and a link 18 interconnects the free end of the crank17 with the free end of the crank 19, at the inner end of stub shaft 20on which the friction disk 11 is fast. Rotation of the friction Vdiskthus will cause a rocking Vmotion of the shaft 14 so that a blade 20held by the clips 16 is alternately placed in engagement with therollers 7 to be stropped posite to the friction diskV carrying end a Yholding means generally designated by 21 CJi is adjustably securedwhereby the device may be secured to the upright wall of a soundreproducing instrument. As indicated in Fig. 1 the attaching meanscomprises the plate 22 formed with downwardly projecting lugs 23 whichengage the outer face of the instrument wall as shown inl Fig. 3. Theplate 22 at its inner side is formed with U-shaped lugs 24 provided withslots 25 for the reception of screws 26 whereby the lugs 24 andthereby-the plate 22 are adjustably secured to tlieend wall 5. lt isobvious that when the deviceV is employed with sound reproducinginstruments of different construction, a slight adjustment of the boX 3is necessary to place the friction disk 11 in engagement with the recordcarrier 2'and this can be accomplished by loosening the screws 26 andadjusting the box 3 with respect to the lug 24 whereupon the screws 26are tightened and the device is arranged in operative position.

The operation of the device is thought to be readily understood from theforegoing description. When araZor blade 20 hasto be stropped it isplaced in the holder 15 and the device-is secured tothe wall lof a soundreproducing instrument such that the friction disk 11 is in engagementwith the record carrier 2. Upon rotation ofthe carrier due to thefrictional contact between the carrier 2 and the friction disk 11rotation is imparted to the latter and incidentally tothe rollers 7 byvirtue of the gear connection as formed bythe apertures 12 in the diskflange and the pinion 9 of one of the rollers. Simultaneously the crankand the link connections 17, 18, 19 impart an oscillating motion to theshaft 14 whereby the blade 20 is locked into alternate engagement withthe coacting rollers?.

The invention is not limited to the details of the parts shown by way ofexample but changes and modifications are included, which constitutedepartures withinthe Vscope ofthe invention as defined by the appendedclaim. Y

l claim: n

ln a stropping device, a stropping mechanism, a sheet metal frame forthe saine, having an upright wall near one end of the mechanism, a platehaving spaced upwardly projecting Vportions adjustably secured to Y theend portionof the frame and curved intermediate their ends to provideresiliency, said plate being provided with spaced downwardly projectinglugs, andwith a separate downwardly projecting portion whereby saidplate maybe placed on the upper edge of'an upright wall and engage thesame, and a friction disk mounted on said casing for driving thestropping mechanism..

In testimony whereof I affix my signature in the presence of twowitnesses. v

` j EDWIN JUELSON.

Witnesses l' DANIEL A. BRENNAN, VELsin A. LILJEGREN.

